Wash-board plate



(No ModeL'S H. & 0. T. LAPHAM.

WASH BOARD PLATE. Y

N0 357,211. I Patented Feb. 8, 1887.

\n/nuz'ssas .INVENTOR T at whom it may concern:

UNITED STATES PATENT I OFFICE.

JOSEPH H. LAPHAM AND owEN r. LAPHAM, OF CLEVELAND, OHIO.

WASH-BOARD PLATE.

SPECIFICATION forming part of Letters Patent No. 357,211, dated February 8, 1887. Application filed October 18, 1886.' Serial No. 216,508. (No model.)

Be it known that we, JosEPH H. LAPHAM and OWEN T. LAPHAM, of Cleveland, in the county of Guyahoga and State of Ohio. have invented a certain new and Improved VVash- Board Plate; and we do hereby declare that the following is a full, clear, and complete dey scription thereof The nature of our said improvement relates to the construction of said zinc plate for an effective rubbing-surface in deterging clothes or textile fabrics.

The following specification, in connection with the annexed drawings, sets forth and describes in detail the construction of the said zinc plate for wash-boards.

Figure 1 is a front view of a part of the zinc plate in connection with a section of a washboard. Fig. 2 is a sectional View of Fig. 1 in the line 00 m. Fig. 3 is a detached section.

Like letters of. reference refer to like parts in the several views.

This zinc plate for wash-boards is of that class known as double-faced, which admits of the plate being used for washing on one or both sides. The frame or wood part is or may be of the ordinary kindor otherwise arranged to secure the said plates in connection with the frame.

Sufflcient of the entire plate is shown for a proper understanding of the whole construction, in which. the corrugations consist of angular flutes A, having plane faceson each side of the angle and extending across the width of the plate. These angular flutes alternate with corrugations C, having spiral convolutions D upon their faces, as seen in Fig. 1. The convexity of the angular flute A at the front forms a concavity, B, on the opposite side, as seen in Fig. 2. The face E of the flute A presents a broader surface than the face F. The junction of these two faces forms the angle of the flute and unites with the convolutions D in the corrugations 0. These convolutions cross the corrugations diagonally with a twist or curve, as seenin Figs. 1 and 3. It is preferred that these spiral-like convolutions D should run in opposite directions from the sides of the wash-board to the center G, as indicated in Fig. l, at which point the two curving directions of the convolutions D meet. This changing of the curving directions may be made to occur at one or more parts of the zinc plate, or the same direction may be continued entirely across the plate. The swell or proj ections H on one side form depressions or concavities I on the other, and the depressions J between the convolutions shape projections on the opposite side of the plate. By this construction the angular flutes alternate with the convoluted corrugations. one side of the plate form projections on the other, making a double-faced zinc plate.

The parts K represent the wood sides or legs; L M, the cross-pieces connected with the The depressions on sides and plate, and N the soap-recess formed 

